#42602 [NEW]: Memory leak occurs when exec() function is used on Windows platform

From: melmack3 at gmail dot com Operating system: Windows XP PHP version: 5.2.4 PHP Bug Type: Performance problem Bug description: Memory leak occurs when exec() function is used on Windows platform Description: ------------ A simple PHP script (attached below) which executes empty Windows batch file 1000 times causes ~10 MB memory leak. Reproduce code: --------------- <?php for($i=0;$i<1000;$i++) { exec("test.bat"); } ?> //test.bat is just an empty file. Expected result: ---------------- Batch file "test.bat" should be executed 1000 times and amount of used memory should not increase when PHP script has finished. Actual result: -------------- Batch file is executed properly but PHP script causes about 10 MB memory leak. It can be observed by usage of performance system monitor. However, this amount of memory is not taken by a certain process - it simply disappears. PHP function memory_get_usage() also does not indicate the leak. Memory leak is observable only on Windows platform (tested on Windows XP). On Linux everything works OK. This problems occurs in all available enviroments : - IIS Webserver. - Apache webserver - PHP command line interpreter -- Edit bug report at http://bugs.php.net/?id=42602&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=42602&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=42602&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=42602&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=42602&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=42602&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=42602&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=42602&r=needscript Try newer version: http://bugs.php.net/fix.php?id=42602&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=42602&r=support Expected behavior: http://bugs.php.net/fix.php?id=42602&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=42602&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=42602&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=42602&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42602&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=42602&r=dst IIS Stability: http://bugs.php.net/fix.php?id=42602&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=42602&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=42602&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=42602&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=42602&r=mysqlcfg